Underground rail services to London's Heathrow airport have reopened after police closed them throughout the morning following a murder at one station overnight.
The Piccadilly Line is the sole underground rail route to Heathrow, the world's busiest international airport.
Earlier, police said a man (18) had been stabbed at Hounslow West station and later died in hospital.
Although normal service would now resume on the rest of the line, trains would not stop at that station, the police spokesman said.